/* $NetBSD: hdfd.c,v 1.82 2015/12/08 20:36:14 christos Exp $ */ /*- * Copyright (c) 1996 Leo Weppelman * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Don Ahn. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)fd.c 7.4 (Berkeley) 5/25/91 */ /*- * Copyright (c) 1993, 1994, 1995, 1996 * Charles M. Hannum. All rights reserved. * * This code is derived from software contributed to Berkeley by * Don Ahn. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Berkeley and its contributors. * 4. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)fd.c 7.4 (Berkeley) 5/25/91 */ /* * Floppy formatting facilities merged from FreeBSD fd.c driver: * Id: fd.c,v 1.53 1995/03/12 22:40:56 joerg Exp * which carries the same copyright/redistribution notice as shown above with * the addition of the following statement before the "Redistribution and * use ..." clause: * * Copyright (c) 1993, 1994 by * jc@irbs.UUCP (John Capo) * vak@zebub.msk.su (Serge Vakulenko) * ache@astral.msk.su (Andrew A. Chernov) * * Copyright (c) 1993, 1994, 1995 by * joerg_wunsch@uriah.sax.de (Joerg Wunsch) * dufault@hda.com (Peter Dufault) */ #include __KERNEL_RCSID(0, "$NetBSD: hdfd.c,v 1.82 2015/12/08 20:36:14 christos Exp $"); #include "opt_ddb.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "ioconf.h" #include "locators.h" /* * {b,c}devsw[] function prototypes */ dev_type_open(fdopen); dev_type_close(fdclose); dev_type_read(fdread); dev_type_write(fdwrite); dev_type_ioctl(fdioctl); dev_type_strategy(fdstrategy); volatile u_char *fdio_addr; #define wrt_fdc_reg(reg, val) { fdio_addr[reg] = val; } #define rd_fdc_reg(reg) ( fdio_addr[reg] ) #define fdc_ienable() MFP2->mf_ierb |= IB_DCHG; /* * Interface to the pseudo-DMA handler */ void fddma_intr(void); void * fddmaaddr = NULL; int fddmalen = 0; extern void mfp_hdfd_nf(void), mfp_hdfd_fifo(void); /* * Argument to fdcintr..... */ static void *intr_arg = NULL; /* XXX: arg. to intr_establish() */ #define FDUNIT(dev) (minor(dev) / 8) #define FDTYPE(dev) (minor(dev) % 8) /* (mis)use device use flag to identify format operation */ #define B_FORMAT B_DEVPRIVATE enum fdc_state { DEVIDLE = 0, MOTORWAIT, DOSEEK, SEEKWAIT, SEEKTIMEDOUT, SEEKCOMPLETE, DOIO, IOCOMPLETE, IOTIMEDOUT, DORESET, RESETCOMPLETE, RESETTIMEDOUT, DORECAL, RECALWAIT, RECALTIMEDOUT, RECALCOMPLETE, }; /* software state, per controller */ struct fdc_softc { device_t sc_dev; /* boilerplate */ struct callout sc_timo_ch; /* timeout callout */ struct callout sc_intr_ch; /* pseudo-intr callout */ struct fd_softc *sc_fd[4]; /* pointers to children */ TAILQ_HEAD(drivehead, fd_softc) sc_drives; enum fdc_state sc_state; int sc_errors; /* number of retries so far */ int sc_overruns; /* number of overruns so far */ u_char sc_status[7]; /* copy of registers */ }; /* controller driver configuration */ int fdcprobe(device_t, cfdata_t, void *); int fdprint(void *, const char *); void fdcattach(device_t, device_t, void *); CFATTACH_DECL_NEW(fdc, sizeof(struct fdc_softc), fdcprobe, fdcattach, NULL, NULL); /* * Floppies come in various flavors, e.g., 1.2MB vs 1.44MB; here is how * we tell them apart. */ struct fd_type { int sectrac; /* sectors per track */ int heads; /* number of heads */ int seccyl; /* sectors per cylinder */ int secsize; /* size code for sectors */ int datalen; /* data len when secsize = 0 */ int steprate; /* step rate and head unload time */ int gap1; /* gap len between sectors */ int gap2; /* formatting gap */ int tracks; /* total num of tracks */ int size; /* size of disk in sectors */ int step; /* steps per cylinder */ int rate; /* transfer speed code */ u_char fillbyte; /* format fill byte */ u_char interleave; /* interleave factor (formatting) */ const char *name; }; /* * The order of entries in the following table is important -- BEWARE! * The order of the types is the same as for the TT/Falcon.... */ struct fd_type fd_types[] = { /* 360kB in 720kB drive */ { 9,2,18,2,0xff,0xdf,0x2a,0x50,40, 720,2,FDC_125KBPS,0xf6,1,"360KB" }, /* 3.5" 720kB diskette */ { 9,2,18,2,0xff,0xdf,0x2a,0x50,80,1440,1,FDC_125KBPS,0xf6,1,"720KB" }, /* 1.44MB diskette */ { 18,2,36,2,0xff,0xcf,0x1b,0x6c,80,2880,1,FDC_250KBPS,0xf6,1,"1.44MB" }, }; /* software state, per disk (with up to 4 disks per ctlr) */ struct fd_softc { device_t sc_dev; struct disk sc_dk; struct fd_type *sc_deftype; /* default type descriptor */ struct fd_type *sc_type; /* current type descriptor */ struct callout sc_motoron_ch; struct callout sc_motoroff_ch; daddr_t sc_blkno; /* starting block number */ int sc_bcount; /* byte count left */ int sc_opts; /* user-set options */ int sc_skip; /* bytes already transferred */ int sc_nblks; /* #blocks currently transferring */ int sc_nbytes; /* #bytes currently transferring */ int sc_drive; /* physical unit number */ int sc_flags; #define FD_OPEN 0x01 /* it's open */ #define FD_MOTOR 0x02 /* motor should be on */ #define FD_MOTOR_WAIT 0x04 /* motor coming up */ #define FD_HAVELAB 0x08 /* got a disklabel */ int sc_cylin; /* where we think the head is */ void *sc_sdhook; /* saved shutdown hook for drive. */ TAILQ_ENTRY(fd_softc) sc_drivechain; int sc_ops; /* I/O ops since last switch */ struct bufq_state *sc_q; /* pending I/O requests */ int sc_active; /* number of active I/O operations */ }; /* floppy driver configuration */ int fdprobe(device_t, cfdata_t, void *); void fdattach(device_t, device_t, void *); CFATTACH_DECL_NEW(hdfd, sizeof(struct fd_softc), fdprobe, fdattach, NULL, NULL); const struct bdevsw fd_bdevsw = { .d_open = fdopen, .d_close = fdclose, .d_strategy = fdstrategy, .d_ioctl = fdioctl, .d_dump = nodump, .d_psize = nosize, .d_discard = nodiscard, .d_flag = D_DISK }; const struct cdevsw fd_cdevsw = { .d_open = fdopen, .d_close = fdclose, .d_read = fdread, .d_write = fdwrite, .d_ioctl = fdioctl, .d_stop = nostop, .d_tty = notty, .d_poll = nopoll, .d_mmap = nommap, .d_kqfilter = nokqfilter, .d_discard = nodiscard, .d_flag = D_DISK }; void fdstart(struct fd_softc *); struct dkdriver fddkdriver = { .d_strategy = fdstrategy }; void fd_set_motor(struct fdc_softc *, int); void fd_motor_off(void *); void fd_motor_on(void *); int fdcresult(struct fdc_softc *); int out_fdc(u_char); void fdc_ctrl_intr(struct clockframe); void fdcstart(struct fdc_softc *); void fdcstatus(device_t, int, const char *); void fdctimeout(void *); void fdcpseudointr(void *); int fdcintr(void *); void fdcretry(struct fdc_softc *); void fdfinish(struct fd_softc *, struct buf *); int fdformat(dev_t, struct ne7_fd_formb *, struct proc *); static void fdgetdisklabel(struct fd_softc *, dev_t); static void fdgetdefaultlabel(struct fd_softc *, struct disklabel *, int); inline struct fd_type *fd_dev_to_type(struct fd_softc *, dev_t); int fdcprobe(device_t parent, cfdata_t cf, void *aux) { static int fdc_matched = 0; bus_space_tag_t mb_tag; bus_space_handle_t handle; /* Match only once */ if (strcmp("fdc", aux) || fdc_matched) return 0; if (!atari_realconfig) return 0; if ((mb_tag = mb_alloc_bus_space_tag()) == NULL) return 0; if (bus_space_map(mb_tag, FD_IOBASE, FD_IOSIZE, 0, &handle)) { printf("fdcprobe: cannot map io-area\n"); mb_free_bus_space_tag(mb_tag); return 0; } fdio_addr = bus_space_vaddr(mb_tag, handle); /* XXX */ #ifdef FD_DEBUG printf("fdcprobe: I/O mapping done va: %p\n", fdio_addr); #endif /* reset */ wrt_fdc_reg(fdout, 0); delay(100); wrt_fdc_reg(fdout, FDO_FRST); /* see if it can handle a command */ if (out_fdc(NE7CMD_SPECIFY) < 0) goto out; out_fdc(0xdf); out_fdc(7); fdc_matched = 1; out: if (fdc_matched == 0) { bus_space_unmap(mb_tag, handle, FD_IOSIZE); mb_free_bus_space_tag(mb_tag); } return fdc_matched; } /* * Arguments passed between fdcattach and fdprobe. */ struct fdc_attach_args { int fa_drive; struct fd_type *fa_deftype; }; /* * Print the location of a disk drive (called just before attaching the * the drive). If `fdc' is not NULL, the drive was found but was not * in the system config file; print the drive name as well. * Return QUIET (config_find ignores this if the device was configured) to * avoid printing `fdN not configured' messages. */ int fdprint(void *aux, const char *fdc) { register struct fdc_attach_args *fa = aux; if (!fdc) aprint_normal(" drive %d", fa->fa_drive); return QUIET; } void fdcattach(device_t parent, device_t self, void *aux) { struct fdc_softc *fdc = device_private(self); struct fdc_attach_args fa; int has_fifo; has_fifo = 0; fdc->sc_dev = self; fdc->sc_state = DEVIDLE; TAILQ_INIT(&fdc->sc_drives); out_fdc(NE7CMD_CONFIGURE); if (out_fdc(0) == 0) { out_fdc(0x1a); /* No polling, fifo depth = 10 */ out_fdc(0); /* Retain configuration across resets */ out_fdc(NE7CMD_LOCK); (void)fdcresult(fdc); has_fifo = 1; } else { (void)rd_fdc_reg(fddata); printf(": no fifo"); } printf("\n"); callout_init(&fdc->sc_timo_ch, 0); callout_init(&fdc->sc_intr_ch, 0); if (intr_establish(22, USER_VEC|FAST_VEC, 0, (hw_ifun_t)(has_fifo ? mfp_hdfd_fifo : mfp_hdfd_nf), NULL) == NULL) { printf("fdcattach: Can't establish interrupt\n"); return; } /* * Setup the interrupt logic. */ MFP2->mf_iprb = (u_int8_t)~IB_DCHG; MFP2->mf_imrb |= IB_DCHG; MFP2->mf_aer |= 0x10; /* fdc int low->high */ /* physical limit: four drives per controller. */ for (fa.fa_drive = 0; fa.fa_drive < 4; fa.fa_drive++) { /* * XXX: Choose something sensible as a default... */ fa.fa_deftype = &fd_types[2]; /* 1.44MB */ (void)config_found(self, (void *)&fa, fdprint); } } int fdprobe(device_t parent, cfdata_t cf, void *aux) { struct fdc_softc *fdc = device_private(parent); struct fdc_attach_args *fa = aux; int drive = fa->fa_drive; int n; if (cf->cf_loc[FDCCF_UNIT] != FDCCF_UNIT_DEFAULT && cf->cf_loc[FDCCF_UNIT] != drive) return 0; /* * XXX * This is to work around some odd interactions between this driver * and SMC Ethernet cards. */ if (cf->cf_loc[FDCCF_UNIT] == FDCCF_UNIT_DEFAULT && drive >= 2) return 0; /* select drive and turn on motor */ wrt_fdc_reg(fdout, drive | FDO_FRST | FDO_MOEN(drive)); /* wait for motor to spin up */ delay(250000); out_fdc(NE7CMD_RECAL); out_fdc(drive); /* wait for recalibrate */ delay(2000000); out_fdc(NE7CMD_SENSEI); n = fdcresult(fdc); #ifdef FD_DEBUG { int i; printf("fdprobe: status"); for (i = 0; i < n; i++) printf(" %x", fdc->sc_status[i]); printf("\n"); } #endif intr_arg = (void*)fdc; if (n != 2 || (fdc->sc_status[0] & 0xf8) != 0x20) return 0; /* turn off motor */ wrt_fdc_reg(fdout, FDO_FRST); return 1; } /* * Controller is working, and drive responded. Attach it. */ void fdattach(device_t parent, device_t self, void *aux) { struct fdc_softc *fdc = device_private(parent); struct fd_softc *fd = device_private(self); struct fdc_attach_args *fa = aux; struct fd_type *type = fa->fa_deftype; int drive = fa->fa_drive; fd->sc_dev = self; callout_init(&fd->sc_motoron_ch, 0); callout_init(&fd->sc_motoroff_ch, 0); /* XXX Allow `flags' to override device type? */ if (type) printf(": %s %d cyl, %d head, %d sec\n", type->name, type->tracks, type->heads, type->sectrac); else printf(": density unknown\n"); bufq_alloc(&fd->sc_q, "disksort", BUFQ_SORT_CYLINDER); fd->sc_cylin = -1; fd->sc_drive = drive; fd->sc_deftype = type; fdc->sc_fd[drive] = fd; /* * Initialize and attach the disk structure. */ disk_init(&fd->sc_dk, device_xname(self), &fddkdriver); disk_attach(&fd->sc_dk); /* Needed to power off if the motor is on when we halt. */ fd->sc_sdhook = shutdownhook_establish(fd_motor_off, fd); } /* * This is called from the assembly part of the interrupt handler * when it is clear that the interrupt was not related to shoving * data. */ void fdc_ctrl_intr(struct clockframe frame) { int s; /* * Disable further interrupts. The fdcintr() routine * explicitly enables them when needed. */ MFP2->mf_ierb &= ~IB_DCHG; /* * Set fddmalen to zero so no pseudo-DMA transfers will * occur. */ fddmalen = 0; if (!BASEPRI(frame.cf_sr)) { /* * We don't want to stay on ipl6..... */ add_sicallback((si_farg)fdcpseudointr, intr_arg, 0); } else { s = splbio(); (void) fdcintr(intr_arg); splx(s); } } inline struct fd_type * fd_dev_to_type(struct fd_softc *fd, dev_t dev) { int type = FDTYPE(dev); if (type > (sizeof(fd_types) / sizeof(fd_types[0]))) return NULL; return type ? &fd_types[type - 1] : fd->sc_deftype; } void fdstrategy(struct buf *bp) { struct fd_softc *fd = device_lookup_private(&hdfd_cd, FDUNIT(bp->b_dev)); int sz; int s; /* Valid unit, controller, and request? */ if (bp->b_blkno < 0 || ((bp->b_bcount % FDC_BSIZE) != 0 && (bp->b_flags & B_FORMAT) == 0)) { bp->b_error = EINVAL; goto done; } /* If it's a null transfer, return immediately. */ if (bp->b_bcount == 0) goto done; sz = howmany(bp->b_bcount, FDC_BSIZE); if (bp->b_blkno + sz > fd->sc_type->size) { sz = fd->sc_type->size - bp->b_blkno; if (sz == 0) { /* If exactly at end of disk, return EOF. */ goto done; } if (sz < 0) { /* If past end of disk, return EINVAL. */ bp->b_error = EINVAL; goto done; } /* Otherwise, truncate request. */ bp->b_bcount = sz << DEV_BSHIFT; } bp->b_rawblkno = bp->b_blkno; bp->b_cylinder = bp->b_blkno / (FDC_BSIZE/DEV_BSIZE) / fd->sc_type->seccyl; #ifdef FD_DEBUG printf("fdstrategy: b_blkno %d b_bcount %ld blkno %qd cylin %ld sz" " %d\n", bp->b_blkno, bp->b_bcount, (long)fd->sc_blkno, bp->b_cylinder, sz); #endif /* Queue transfer on drive, activate drive and controller if idle. */ s = splbio(); bufq_put(fd->sc_q, bp); callout_stop(&fd->sc_motoroff_ch); /* a good idea */ if (fd->sc_active == 0) fdstart(fd); #ifdef DIAGNOSTIC else { struct fdc_softc *fdc; fdc = device_private(device_parent(fd->sc_dev)); if (fdc->sc_state == DEVIDLE) { printf("fdstrategy: controller inactive\n"); fdcstart(fdc); } } #endif splx(s); return; done: /* Toss transfer; we're done early. */ bp->b_resid = bp->b_bcount; biodone(bp); } void fdstart(struct fd_softc *fd) { struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); int active = fdc->sc_drives.tqh_first != 0; /* Link into controller queue. */ fd->sc_active = 1; TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); /* If controller not already active, start it. */ if (!active) fdcstart(fdc); } void fdfinish(struct fd_softc *fd, struct buf *bp) { struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); /* * Move this drive to the end of the queue to give others a `fair' * chance. We only force a switch if N operations are completed while * another drive is waiting to be serviced, since there is a long motor * startup delay whenever we switch. */ (void)bufq_get(fd->sc_q); if (fd->sc_drivechain.tqe_next && ++fd->sc_ops >= 8) { fd->sc_ops = 0; TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); if (bufq_peek(fd->sc_q) != NULL) TAILQ_INSERT_TAIL(&fdc->sc_drives, fd, sc_drivechain); else fd->sc_active = 0; } bp->b_resid = fd->sc_bcount; fd->sc_skip = 0; biodone(bp); /* turn off motor 5s from now */ callout_reset(&fd->sc_motoroff_ch, 5 * hz, fd_motor_off, fd); fdc->sc_state = DEVIDLE; } int fdread(dev_t dev, struct uio *uio, int flags) { return physio(fdstrategy, NULL, dev, B_READ, minphys, uio); } int fdwrite(dev_t dev, struct uio *uio, int flags) { return physio(fdstrategy, NULL, dev, B_WRITE, minphys, uio); } void fd_set_motor(struct fdc_softc *fdc, int reset) { struct fd_softc *fd; u_char status; int n; if ((fd = fdc->sc_drives.tqh_first) != NULL) status = fd->sc_drive; else status = 0; if (!reset) status |= FDO_FRST | FDO_FDMAEN; for (n = 0; n < 4; n++) if ((fd = fdc->sc_fd[n]) && (fd->sc_flags & FD_MOTOR)) status |= FDO_MOEN(n); wrt_fdc_reg(fdout, status); } void fd_motor_off(void *arg) { struct fd_softc *fd = arg; struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); int s; s = splbio(); fd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); fd_set_motor(fdc, 0); splx(s); } void fd_motor_on(void *arg) { struct fd_softc *fd = arg; struct fdc_softc *fdc = device_private(device_parent(fd->sc_dev)); int s; s = splbio(); fd->sc_flags &= ~FD_MOTOR_WAIT; if ((fdc->sc_drives.tqh_first == fd) && (fdc->sc_state == MOTORWAIT)) (void) fdcintr(fdc); splx(s); } int fdcresult(struct fdc_softc *fdc) { u_char i; int j = 100000, n = 0; for (; j; j--) { i = rd_fdc_reg(fdsts) & (NE7_DIO | NE7_RQM | NE7_CB); if (i == NE7_RQM) return n; if (i == (NE7_DIO | NE7_RQM | NE7_CB)) { if (n >= sizeof(fdc->sc_status)) { log(LOG_ERR, "fdcresult: overrun\n"); return -1; } fdc->sc_status[n++] = rd_fdc_reg(fddata); } else delay(10); } log(LOG_ERR, "fdcresult: timeout\n"); return -1; } int out_fdc(u_char x) { int i = 100000; while (((rd_fdc_reg(fdsts) & (NE7_DIO|NE7_RQM)) != NE7_RQM) && i-- > 0) delay(1); if (i <= 0) return -1; wrt_fdc_reg(fddata, x); return 0; } int fdopen(dev_t dev, int flags, int mode, struct lwp *l) { struct fd_softc *fd; struct fd_type *type; fd = device_lookup_private(&hdfd_cd, FDUNIT(dev)); if (fd == NULL) return ENXIO; type = fd_dev_to_type(fd, dev); if (type == NULL) return ENXIO; if ((fd->sc_flags & FD_OPEN) != 0 && fd->sc_type != type) return EBUSY; fd->sc_type = type; fd->sc_cylin = -1; fd->sc_flags |= FD_OPEN; fdgetdisklabel(fd, dev); return 0; } int fdclose(dev_t dev, int flags, int mode, struct lwp *l) { struct fd_softc *fd = device_lookup_private(&hdfd_cd, FDUNIT(dev)); fd->sc_flags &= ~(FD_OPEN|FD_HAVELAB); fd->sc_opts &= ~(FDOPT_NORETRY|FDOPT_SILENT); return 0; } void fdcstart(struct fdc_softc *fdc) { #ifdef DIAGNOSTIC /* only got here if controller's drive queue was inactive; should be in idle state */ if (fdc->sc_state != DEVIDLE) { printf("fdcstart: not idle\n"); return; } #endif (void) fdcintr(fdc); } static void fdcpstatus(struct fdc_softc *fdc) { char bits[64]; snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); printf(" (st0 %s", bits); snprintb(bits, sizeof(bits), NE7_ST1BITS, fdc->sc_status[1]); printf(" st1 %s", bits); snprintb(bits, sizeof(bits), NE7_ST2BITS, fdc->sc_status[2]); printf(" st2 %s", bits); printf(" cyl %d head %d sec %d)\n", fdc->sc_status[3], fdc->sc_status[4], fdc->sc_status[5]); } void fdcstatus(device_t self, int n, const char *s) { struct fdc_softc *fdc = device_private(device_parent(self)); char bits[64]; if (n == 0) { out_fdc(NE7CMD_SENSEI); (void) fdcresult(fdc); n = 2; } printf("%s: %s", device_xname(self), s); switch (n) { case 0: printf("\n"); break; case 2: snprintb(bits, sizeof(bits), NE7_ST0BITS, fdc->sc_status[0]); printf(" (st0 %s cyl %d)\n", bits, fdc->sc_status[1]); break; case 7: fdcpstatus(fdc); break; #ifdef DIAGNOSTIC default: printf("\nfdcstatus: weird size"); break; #endif } } void fdctimeout(void *arg) { struct fdc_softc *fdc = arg; struct fd_softc *fd = fdc->sc_drives.tqh_first; int s; s = splbio(); fdcstatus(fd->sc_dev, 0, "timeout"); if (bufq_peek(fd->sc_q) != NULL) fdc->sc_state++; else fdc->sc_state = DEVIDLE; (void) fdcintr(fdc); splx(s); } void fdcpseudointr(void *arg) { int s; /* Just ensure it has the right spl. */ s = splbio(); (void) fdcintr(arg); splx(s); } int fdcintr(void *arg) { struct fdc_softc *fdc = arg; #define st0 fdc->sc_status[0] #define st1 fdc->sc_status[1] #define cyl fdc->sc_status[1] struct fd_softc *fd; struct buf *bp; int read, head, sec, i, nblks; struct fd_type *type; struct ne7_fd_formb *finfo = NULL; loop: /* Is there a drive for the controller to do a transfer with? */ fd = fdc->sc_drives.tqh_first; if (fd == NULL) { fdc->sc_state = DEVIDLE; return 1; } /* Is there a transfer to this drive? If not, deactivate drive. */ bp = bufq_peek(fd->sc_q); if (bp == NULL) { fd->sc_ops = 0; TAILQ_REMOVE(&fdc->sc_drives, fd, sc_drivechain); fd->sc_active = 0; goto loop; } if (bp->b_flags & B_FORMAT) finfo = (struct ne7_fd_formb *)bp->b_data; switch (fdc->sc_state) { case DEVIDLE: fdc->sc_errors = 0; fdc->sc_overruns = 0; fd->sc_skip = 0; fd->sc_bcount = bp->b_bcount; fd->sc_blkno = bp->b_blkno / (FDC_BSIZE / DEV_BSIZE); callout_stop(&fd->sc_motoroff_ch); if ((fd->sc_flags & FD_MOTOR_WAIT) != 0) { fdc->sc_state = MOTORWAIT; return 1; } if ((fd->sc_flags & FD_MOTOR) == 0) { /* Turn on the motor, being careful about pairing. */ struct fd_softc *ofd = fdc->sc_fd[fd->sc_drive ^ 1]; if (ofd && ofd->sc_flags & FD_MOTOR) { callout_stop(&ofd->sc_motoroff_ch); ofd->sc_flags &= ~(FD_MOTOR | FD_MOTOR_WAIT); } fd->sc_flags |= FD_MOTOR | FD_MOTOR_WAIT; fd_set_motor(fdc, 0); fdc->sc_state = MOTORWAIT; /* Allow .25s for motor to stabilize. */ callout_reset(&fd->sc_motoron_ch, hz / 4, fd_motor_on, fd); return 1; } /* Make sure the right drive is selected. */ fd_set_motor(fdc, 0); /* fall through */ case DOSEEK: doseek: if (fd->sc_cylin == bp->b_cylinder) goto doio; out_fdc(NE7CMD_SPECIFY);/* specify command */ out_fdc(fd->sc_type->steprate); out_fdc(0x7); /* XXX head load time == 6ms - non-DMA */ fdc_ienable(); out_fdc(NE7CMD_SEEK); /* seek function */ out_fdc(fd->sc_drive); /* drive number */ out_fdc(bp->b_cylinder * fd->sc_type->step); fd->sc_cylin = -1; fdc->sc_state = SEEKWAIT; iostat_seek(fd->sc_dk.dk_stats); disk_busy(&fd->sc_dk); callout_reset(&fdc->sc_timo_ch, 4 * hz, fdctimeout, fdc); return 1; case DOIO: doio: if (finfo) fd->sc_skip = (char *)&(finfo->fd_formb_cylno(0)) - (char *)finfo; type = fd->sc_type; sec = fd->sc_blkno % type->seccyl; head = sec / type->sectrac; sec -= head * type->sectrac; nblks = type->sectrac - sec; nblks = min(nblks, fd->sc_bcount / FDC_BSIZE); nblks = min(nblks, FDC_MAXIOSIZE / FDC_BSIZE); fd->sc_nblks = nblks; fd->sc_nbytes = finfo ? bp->b_bcount : nblks * FDC_BSIZE; #ifdef DIAGNOSTIC { int block; block = (fd->sc_cylin * type->heads + head) * type->sectrac + sec; if (block != fd->sc_blkno) { printf("fdcintr: block %d != blkno %qd\n", block, fd->sc_blkno); #ifdef DDB Debugger(); #endif } } #endif read = bp->b_flags & B_READ ? 1 : 0; /* * Setup pseudo-DMA address & count */ fddmaaddr = (char *)bp->b_data + fd->sc_skip; fddmalen = fd->sc_nbytes; wrt_fdc_reg(fdctl, type->rate); #ifdef FD_DEBUG printf("fdcintr: %s drive %d track %d head %d sec %d" " nblks %d\n", read ? "read" : "write", fd->sc_drive, fd->sc_cylin, head, sec, nblks); #endif fdc_ienable(); if (finfo) { /* formatting */ if (out_fdc(NE7CMD_FORMAT) < 0) { fdc->sc_errors = 4; fdcretry(fdc); goto loop; } out_fdc((head << 2) | fd->sc_drive); out_fdc(finfo->fd_formb_secshift); out_fdc(finfo->fd_formb_nsecs); out_fdc(finfo->fd_formb_gaplen); out_fdc(finfo->fd_formb_fillbyte); } else { if (read) out_fdc(NE7CMD_READ); /* READ */ else out_fdc(NE7CMD_WRITE); /* WRITE */ out_fdc((head << 2) | fd->sc_drive); out_fdc(fd->sc_cylin); /* track */ out_fdc(head); /* head */ out_fdc(sec + 1); /* sector +1 */ out_fdc(type->secsize); /* sector size */ out_fdc(sec + nblks); /* last sectors */ out_fdc(type->gap1); /* gap1 size */ out_fdc(type->datalen); /* data length */ } fdc->sc_state = IOCOMPLETE; disk_busy(&fd->sc_dk); /* allow 2 seconds for operation */ callout_reset(&fdc->sc_timo_ch, 2 * hz, fdctimeout, fdc); return 1; /* will return later */ case SEEKWAIT: callout_stop(&fdc->sc_timo_ch); fdc->sc_state = SEEKCOMPLETE; /* allow 1/50 second for heads to settle */ callout_reset(&fdc->sc_intr_ch, hz / 50, fdcpseudointr, fdc); return 1; case SEEKCOMPLETE: /* no data on seek */ disk_unbusy(&fd->sc_dk, 0, 0); /* Make sure seek really happened. */ out_fdc(NE7CMD_SENSEI); if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != bp->b_cylinder * fd->sc_type->step) { #ifdef FD_DEBUG fdcstatus(fd->sc_dev, 2, "seek failed"); #endif fdcretry(fdc); goto loop; } fd->sc_cylin = bp->b_cylinder; goto doio; case IOTIMEDOUT: case SEEKTIMEDOUT: case RECALTIMEDOUT: case RESETTIMEDOUT: fdcretry(fdc); goto loop; case IOCOMPLETE: /* IO DONE, post-analyze */ callout_stop(&fdc->sc_timo_ch); disk_unbusy(&fd->sc_dk, (bp->b_bcount - bp->b_resid), (bp->b_flags & B_READ)); if (fdcresult(fdc) != 7 || (st1 & 0x37) != 0) { /* * As the damn chip doesn't seem to have a FIFO, * accept a few overruns as a fact of life *sigh* */ if ((st1 & 0x10) && (++fdc->sc_overruns < 4)) { fdc->sc_state = DOSEEK; goto loop; } #ifdef FD_DEBUG fdcstatus(fd->sc_dev, 7, bp->b_flags & B_READ ? "read failed" : "write failed"); printf("blkno %qd nblks %d\n", fd->sc_blkno, fd->sc_nblks); #endif fdcretry(fdc); goto loop; } if (fdc->sc_errors) { diskerr(bp, "fd", "soft error", LOG_PRINTF, fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); printf("\n"); fdc->sc_errors = 0; } fdc->sc_overruns = 0; fd->sc_blkno += fd->sc_nblks; fd->sc_skip += fd->sc_nbytes; fd->sc_bcount -= fd->sc_nbytes; if (!finfo && fd->sc_bcount > 0) { bp->b_cylinder = fd->sc_blkno / fd->sc_type->seccyl; goto doseek; } fdfinish(fd, bp); goto loop; case DORESET: /* try a reset, keep motor on */ fd_set_motor(fdc, 1); delay(100); fd_set_motor(fdc, 0); fdc->sc_state = RESETCOMPLETE; callout_reset(&fdc->sc_timo_ch, hz / 2, fdctimeout, fdc); return 1; /* will return later */ case RESETCOMPLETE: callout_stop(&fdc->sc_timo_ch); /* clear the controller output buffer */ for (i = 0; i < 4; i++) { out_fdc(NE7CMD_SENSEI); (void) fdcresult(fdc); } /* fall through */ case DORECAL: fdc_ienable(); out_fdc(NE7CMD_RECAL); /* recalibrate function */ out_fdc(fd->sc_drive); fdc->sc_state = RECALWAIT; callout_reset(&fdc->sc_timo_ch, 5 * hz, fdctimeout, fdc); return 1; /* will return later */ case RECALWAIT: callout_stop(&fdc->sc_timo_ch); fdc->sc_state = RECALCOMPLETE; /* allow 1/30 second for heads to settle */ callout_reset(&fdc->sc_intr_ch, hz / 30, fdcpseudointr, fdc); return 1; /* will return later */ case RECALCOMPLETE: out_fdc(NE7CMD_SENSEI); if (fdcresult(fdc) != 2 || (st0 & 0xf8) != 0x20 || cyl != 0) { #ifdef FD_DEBUG fdcstatus(fd->sc_dev, 2, "recalibrate failed"); #endif fdcretry(fdc); goto loop; } fd->sc_cylin = 0; goto doseek; case MOTORWAIT: if (fd->sc_flags & FD_MOTOR_WAIT) return 1; /* time's not up yet */ goto doseek; default: fdcstatus(fd->sc_dev, 0, "stray interrupt"); return 1; } #ifdef DIAGNOSTIC panic("fdcintr: impossible"); #endif #undef st0 #undef st1 #undef cyl } void fdcretry(struct fdc_softc *fdc) { struct fd_softc *fd; struct buf *bp; fd = fdc->sc_drives.tqh_first; bp = bufq_peek(fd->sc_q); if (fd->sc_opts & FDOPT_NORETRY) goto fail; switch (fdc->sc_errors) { case 0: /* try again */ fdc->sc_state = DOSEEK; break; case 1: case 2: case 3: /* didn't work; try recalibrating */ fdc->sc_state = DORECAL; break; case 4: /* still no go; reset the bastard */ fdc->sc_state = DORESET; break; default: fail: if ((fd->sc_opts & FDOPT_SILENT) == 0) { diskerr(bp, "fd", "hard error", LOG_PRINTF, fd->sc_skip / FDC_BSIZE, (struct disklabel *)NULL); fdcpstatus(fdc); } bp->b_error = EIO; fdfinish(fd, bp); } fdc->sc_errors++; } int fdioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) { struct fd_softc *fd; struct disklabel buffer; int error; struct fdformat_parms *form_parms; struct fdformat_cmd *form_cmd; struct ne7_fd_formb *fd_formb; unsigned int scratch; int il[FD_MAX_NSEC + 1]; register int i, j; fd = device_lookup_private(&hdfd_cd, FDUNIT(dev)); switch (cmd) { case DIOCGDINFO: case DIOCGPARTINFO: fdgetdisklabel(fd, dev); break; } error = disk_ioctl(&fd->sc_dk, RAW_PART, cmd, addr, flag, l); if (error != EPASSTHROUGH) return error; switch (cmd) { case DIOCWLABEL: if ((flag & FWRITE) == 0) return EBADF; /* XXX do something */ return 0; case DIOCSDINFO: case DIOCWDINFO: if ((flag & FWRITE) == 0) return EBADF; fd->sc_flags &= ~FD_HAVELAB; /* Invalid */ error = setdisklabel(&buffer, (struct disklabel *)addr, 0,NULL); if (error) return error; if (cmd == DIOCWDINFO) error = writedisklabel(dev, fdstrategy, &buffer, NULL); return error; case FDIOCGETFORMAT: form_parms = (struct fdformat_parms *)addr; form_parms->fdformat_version = FDFORMAT_VERSION; form_parms->nbps = 128 * (1 << fd->sc_type->secsize); form_parms->ncyl = fd->sc_type->tracks; form_parms->nspt = fd->sc_type->sectrac; form_parms->ntrk = fd->sc_type->heads; form_parms->stepspercyl = fd->sc_type->step; form_parms->gaplen = fd->sc_type->gap2; form_parms->fillbyte = fd->sc_type->fillbyte; form_parms->interleave = fd->sc_type->interleave; switch (fd->sc_type->rate) { case FDC_500KBPS: form_parms->xfer_rate = 500 * 1024; break; case FDC_300KBPS: form_parms->xfer_rate = 300 * 1024; break; case FDC_250KBPS: form_parms->xfer_rate = 250 * 1024; break; case FDC_125KBPS: form_parms->xfer_rate = 125 * 1024; break; default: return EINVAL; } return 0; case FDIOCSETFORMAT: if ((flag & FWRITE) == 0) return EBADF; /* must be opened for writing */ form_parms = (struct fdformat_parms *)addr; if (form_parms->fdformat_version != FDFORMAT_VERSION) return EINVAL; /* wrong version of formatting prog */ scratch = form_parms->nbps >> 7; if ((form_parms->nbps & 0x7f) || ffs(scratch) == 0 || scratch & ~(1 << (ffs(scratch)-1))) /* not a power-of-two multiple of 128 */ return EINVAL; switch (form_parms->xfer_rate) { case 500 * 1024: fd->sc_type->rate = FDC_500KBPS; break; case 300 * 1024: fd->sc_type->rate = FDC_300KBPS; break; case 250 * 1024: fd->sc_type->rate = FDC_250KBPS; break; case 125 * 1024: fd->sc_type->rate = FDC_125KBPS; break; default: return EINVAL; } if (form_parms->nspt > FD_MAX_NSEC || form_parms->fillbyte > 0xff || form_parms->interleave > 0xff) return EINVAL; fd->sc_type->sectrac = form_parms->nspt; if (form_parms->ntrk != 2 && form_parms->ntrk != 1) return EINVAL; fd->sc_type->heads = form_parms->ntrk; fd->sc_type->seccyl = form_parms->nspt * form_parms->ntrk; fd->sc_type->secsize = ffs(scratch)-1; fd->sc_type->gap2 = form_parms->gaplen; fd->sc_type->tracks = form_parms->ncyl; fd->sc_type->size = fd->sc_type->seccyl * form_parms->ncyl * form_parms->nbps / DEV_BSIZE; fd->sc_type->step = form_parms->stepspercyl; fd->sc_type->fillbyte = form_parms->fillbyte; fd->sc_type->interleave = form_parms->interleave; return 0; case FDIOCFORMAT_TRACK: if ((flag & FWRITE) == 0) return EBADF; /* must be opened for writing */ form_cmd = (struct fdformat_cmd *)addr; if (form_cmd->formatcmd_version != FDFORMAT_VERSION) return EINVAL; /* wrong version of formatting prog */ if (form_cmd->head >= fd->sc_type->heads || form_cmd->cylinder >= fd->sc_type->tracks) { return EINVAL; } fd_formb = malloc(sizeof(struct ne7_fd_formb), M_TEMP, M_NOWAIT); if (fd_formb == 0) return ENOMEM; fd_formb->head = form_cmd->head; fd_formb->cyl = form_cmd->cylinder; fd_formb->transfer_rate = fd->sc_type->rate; fd_formb->fd_formb_secshift = fd->sc_type->secsize; fd_formb->fd_formb_nsecs = fd->sc_type->sectrac; fd_formb->fd_formb_gaplen = fd->sc_type->gap2; fd_formb->fd_formb_fillbyte = fd->sc_type->fillbyte; memset(il, 0,sizeof il); for (j = 0, i = 1; i <= fd_formb->fd_formb_nsecs; i++) { while (il[(j%fd_formb->fd_formb_nsecs)+1]) j++; il[(j%fd_formb->fd_formb_nsecs)+1] = i; j += fd->sc_type->interleave; } for (i = 0; i < fd_formb->fd_formb_nsecs; i++) { fd_formb->fd_formb_cylno(i) = form_cmd->cylinder; fd_formb->fd_formb_headno(i) = form_cmd->head; fd_formb->fd_formb_secno(i) = il[i+1]; fd_formb->fd_formb_secsize(i) = fd->sc_type->secsize; } error = fdformat(dev, fd_formb, l->l_proc); free(fd_formb, M_TEMP); return error; case FDIOCGETOPTS: /* get drive options */ *(int *)addr = fd->sc_opts; return 0; case FDIOCSETOPTS: /* set drive options */ fd->sc_opts = *(int *)addr; return 0; default: return ENOTTY; } #ifdef DIAGNOSTIC panic("fdioctl: impossible"); #endif } int fdformat(dev_t dev, struct ne7_fd_formb *finfo, struct proc *p) { int rv = 0; struct fd_softc *fd = device_lookup_private(&hdfd_cd, FDUNIT(dev)); struct fd_type *type = fd->sc_type; struct buf *bp; /* set up a buffer header for fdstrategy() */ bp = getiobuf(NULL, false); if (bp == NULL) return ENOBUFS; memset((void *)bp, 0, sizeof(struct buf)); bp->b_flags = B_PHYS | B_FORMAT; bp->b_cflags |= BC_BUSY; bp->b_proc = p; bp->b_dev = dev; /* * calculate a fake blkno, so fdstrategy() would initiate a * seek to the requested cylinder */ bp->b_blkno = (finfo->cyl * (type->sectrac * type->heads) + finfo->head * type->sectrac) * FDC_BSIZE / DEV_BSIZE; bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; bp->b_data = (void *)finfo; #ifdef DEBUG printf("fdformat: blkno %x count %lx\n", bp->b_blkno, bp->b_bcount); #endif /* now do the format */ fdstrategy(bp); /* ...and wait for it to complete */ mutex_enter(bp->b_objlock); while ((bp->b_oflags & BO_DONE) == 0) { rv = cv_timedwait(&bp->b_done, bp->b_objlock, 20 * hz); if (rv == EWOULDBLOCK) break; } mutex_exit(bp->b_objlock); if (rv == EWOULDBLOCK) { /* timed out */ rv = EIO; biodone(bp); } else if (bp->b_error != 0) { rv = bp->b_error; } putiobuf(bp); return rv; } /* * Obtain a disklabel. Either a real one from the disk or, if there * is none, a fake one. */ static void fdgetdisklabel(struct fd_softc *fd, dev_t dev) { struct disklabel *lp; struct cpu_disklabel cpulab; if (fd->sc_flags & FD_HAVELAB) return; /* Already got one */ lp = fd->sc_dk.dk_label; memset(lp, 0, sizeof(*lp)); memset(&cpulab, 0, sizeof(cpulab)); lp->d_secpercyl = fd->sc_type->seccyl; lp->d_type = DKTYPE_FLOPPY; lp->d_secsize = FDC_BSIZE; lp->d_secperunit = fd->sc_type->size; /* * If there is no label on the disk: fake one */ if (readdisklabel(dev, fdstrategy, lp, &cpulab) != NULL) fdgetdefaultlabel(fd, lp, RAW_PART); fd->sc_flags |= FD_HAVELAB; if ((FDC_BSIZE * fd->sc_type->size) < (lp->d_secsize * lp->d_secperunit)) { /* * XXX: Ignore these fields. If you drop a vnddisk * on more than one floppy, you'll get disturbing * sounds! */ lp->d_secpercyl = fd->sc_type->seccyl; lp->d_type = DKTYPE_FLOPPY; lp->d_secsize = FDC_BSIZE; lp->d_secperunit = fd->sc_type->size; } } /* * Build defaultdisk label. For now we only create a label from what we * know from 'sc'. */ static void fdgetdefaultlabel(struct fd_softc *fd, struct disklabel *lp, int part) { memset(lp, 0, sizeof(struct disklabel)); lp->d_secsize = 128 * (1 << fd->sc_type->secsize); lp->d_ntracks = fd->sc_type->heads; lp->d_nsectors = fd->sc_type->sectrac; lp->d_secpercyl = lp->d_ntracks * lp->d_nsectors; lp->d_ncylinders = fd->sc_type->size / lp->d_secpercyl; lp->d_secperunit = fd->sc_type->size; lp->d_type = DKTYPE_FLOPPY; lp->d_rpm = 300; /* good guess I suppose. */ lp->d_interleave = 1; /* FIXME: is this OK? */ lp->d_bbsize = 0; lp->d_sbsize = 0; lp->d_npartitions = part + 1; lp->d_trkseek = 6000; /* Who cares... */ lp->d_magic = DISKMAGIC; lp->d_magic2 = DISKMAGIC; lp->d_checksum = dkcksum(lp); lp->d_partitions[part].p_size = lp->d_secperunit; lp->d_partitions[part].p_fstype = FS_UNUSED; lp->d_partitions[part].p_fsize = 1024; lp->d_partitions[part].p_frag = 8; }